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	Copyright (c) 2017-2018 Jean-Marc VIGLINO,
	released under CeCILL-B (french BSD like) licence: http://www.cecill.info/

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	<title>ol-ext: Search feature control</title>
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	<meta name="description" content="Control to add a grid reference to a map." />
	<meta name="keywords" content="ol3, control, search, vector, feature" />

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	<a href="https://github.com/Viglino/ol-ext" class="icss-github-corner"><i></i></a>

	<a href="../../index.html">
		<h1>ol-ext: Search feature control</h1>
	</a>

	<div class="info">
		<i>ol.control.SearchFeature</i> is a control to search features in a source.
		<ul>
			<li>
				You have to define a <i>ol.source.Vector</i> to search in.
			</li>
			<li>
				You can define a <i>property</i> that will be used to search in or define a getTitle/getSearchString function.
			</li>
			<li>
				You can define a <i>getTitle</i> to get the string that will be displayed in the menu
			</li>
			<li>
				You can define a <i>getSearchString</i> function that will take a feature and
				return a string to search in.
			</li>
		</ul>
		<br/>
		<i>ol.control.SearchFeature</i> use the <a href="map.control.search.html">ol.control.Search</a> control.
	</div>

	<!-- DIV pour la carte -->
	<div id="map" style="width:600px; height:400px;"></div>

	<div class="options">
		<h2>Options:</h2>
		<ul>
			<li>
				maxInputs: <input type="number" onchange="search.set('maxItems', Number(this.value));" style="width:3em;" value="10" />
			</li>
			<li>
				search property:
				<select onchange="search.set('property',this.value); search.search();">
					<option value="commune">commune</option>
					<option value="region">region</option>
					<option value="text">text</option>
				</select>
			</li>
		</ul>
		<i>Use the search control to start a new search.</i>
	</div>
	
	<script type="text/javascript">
	// Layers
	var layers = [
		new ol.layer.Tile({
			title:'terrain-background',
			source: new ol.source.Stamen({ layer: 'terrain' })
		})
	]

	// The map
	var map = new ol.Map
		({	target: 'map',
			view: new ol.View
			({	zoom: 5,
				center: [166326, 5992663]
			}),
			interactions: ol.interaction.defaults({ altShiftDragRotate:false, pinchRotate:false }),
			layers: layers
		});

	// GeoJSON layer
	var vectorSource = new ol.source.Vector(
	{	url: '../data/fond_guerre.geojson',
		projection: 'EPSG:3857',
		format: new ol.format.GeoJSON(),
		attributions: [ "&copy; <a href='https://data.culture.gouv.fr/explore/dataset/fonds-de-la-guerre-14-18-extrait-de-la-base-memoire'>data.culture.gouv.fr</a>" ],
		logo:"https://www.data.gouv.fr/s/avatars/37/e56718abd4465985ddde68b33be1ef.jpg" 
	});

	map.addLayer(new ol.layer.Vector(
	{	name: 'Fonds de guerre 14-18',
		source: vectorSource,
		style: new ol.style.Style({ image: new ol.style.Icon({ src:"../data/camera.png", scale: 0.8 }) })
	}));

	// Control Select 
	var select = new ol.interaction.Select({});
	map.addInteraction(select);

	// Set the control grid reference
	var search = new ol.control.SearchFeature(
		{	//target: $(".options").get(0),
			source: vectorSource,
			property: $(".options select").val()
		});
	map.addControl (search);

	// Select feature when click on the reference index
	search.on('select', function(e)
		{	select.getFeatures().clear();
			select.getFeatures().push (e.search);
			var p = e.search.getGeometry().getFirstCoordinate();
			map.getView().animate({ center:p });
		});

	</script>
	
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